Typical Grid Connection Schemes for Distributed PV Projects

This document outlines typical grid connection schemes for distributed photovoltaic (PV) power generation projects, developed in accordance with the National Energy Administration's regulations. It covers three main voltage levels: 380/220V AC, 10kV AC, and 110/35kV AC. For 380/220V, schemes include full grid connection and self-consumption with surplus electricity, applicable for single grid-connected points up to 400kW (8kW for 220V). For 10kV, schemes address full grid connection and self-consumption (both centralized and decentralized access) for capacities between 400kW and 6000kW. For 110/35kV, schemes focus on self-consumption with surplus electricity for large-scale industrial and commercial projects, with total installed capacities up to 50MW for 110kV and 20MW for 35kV. Each scheme specifies grid connection points (e.g., public lines, substations, user buses) and optional reactive power compensation devices. The document serves as a reference for distributed PV developers to select appropriate grid connection methods based on project scale and grid conditions.